Home / 20,155,490,061.90-30,233,235,092.85-18,686,161,985.10

Finding the Fourth Proportional to 20,155,490,061.90, 30,233,235,092.85 and 18,686,161,985.10

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Solution

The fourth proportional to 20,155,490,061.90, 30,233,235,092.85 and 18,686,161,985.10 is: 28,029,242,977.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155,490,061.90 : 30,233,235,092.85 = 18,686,161,985.10 : x
  2. Step 2: Convert to fraction form
    20,155,490,061.90/30,233,235,092.85 = 18,686,161,985.10/x
  3. Step 3: Cross multiply
    20,155,490,061.90x = 30,233,235,092.85 × 18,686,161,985.10
  4. Step 4: Simplify right side
    20,155,490,061.90x = 564,943,128,278,604,840,960
  5. Step 5: Solve for x
    x = 564,943,128,278,604,840,960/20,155,490,061.90
  6. Step 6: Final answer
    x = 28,029,242,977.65

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.